Gauge



P. s. RUSSEL ET AL ,997,917

GAUGE April. 16, 1935.

Filed April 9, 195o 4 7/ |21 3513 M @117km 74 BO 74 i -W Patented Apr.16, 1935 UNITED STATES PATENT OFFICE GAUGE Philip Sherman Russel andAdolf von Wangenheim, Detroit, Mich., assignors to Detroit LubricatorCompany, Detroit, Mich., a corporation of Michigan Application April 9,1930, Serial No. 442,781

16 claims. (C1. 'z3- 110) Our invention relates to new and usefulimclamps the iiange It against shoulder to proprovements in gauges, andmore particularly to vide an hermetically sealed chamber I2 between Vagauge for indicating liquid level in a tank or y the bellows 8 and thewalls of casing I. Rising the like. from the top or inside face ofmember I I is a boss 5 An .object of our invention is to provide a gaugeor the like I 3,'substantia1ly concentric with and 5 which whenpositioned in the delivery line from `within bellows 8. The boss I3terminates, as at a tank will accurately indicate the level of liquidI4, adjacent the head S to limit or stop collapse in the tank, whetherthe gauge is positioned above or contraction of the bellows short of itselastic or below the tank level. limit. Through the member II and bossI3 is a 1o Another object is to provide a gauge which is bore I5 havingan internal continuous downward l0 regulatable for use with liquids ofdifferent spefacing shoulder I5 for a purpose to be described. cicgravities. Extending laterally from substantially diamet- Another objectis to provide means to permit rically opposite points on the underfaceof memovertravel of the pressure responsive means beber II, are downwardinclined top wall members yond the limit of travel of the indicatorpointer, I1 of a mechanism housing or casing `I8. 'I'he 15 therebypreventing injury to the mechanism. members I1 merge into downwardconverging side The invention consists in the improved conwall membersi9 which join with a bottom wall `struction and combination of parts, tobe more member 2li. Substantially at the junction of the fully describedhereinafter, and the novelty of members I1 and I9 are opposite inwardlypro-v which will be particularly pointed out and disjecting lugs 2lwhich are set back from the plane 20 tinctly claimed. I of the frontface of the casing I8. Extending In the accompanying drawing, to betaken as between the lugs 2I and'secured thereto by screws a part ofthis specication, we have fully and or the like 22,is anindicia-carrying plate 23. The clearly illustrated a preferredembodiment of our members I9 are joined by a' Substantiauyhoriinvention, in which drawingzontal cross-bar or member 24 having itsforward 25 Figure 1 is a view in front elevation, with the edge set backfrom the plane of the front face of casing partly broken away, of agauge embodying casing I8. Reinforcing webs or gussets 25,v 25a ourinvention; are preferably provided between the member 24 Fig. 2 is aview in section on the line 2-2 0f and members I9. At the lower ends ofmembers Fig. 1; I9 are opposite inwardly projecting bosses'ZB 3.o

Fig. 3 is van enlarged detail view in section on which are also set backfrom the plane of the the line 3 3 of Fig. l, but with the pointer infront face of casing I8. The members I1, I9, 20

vertical position, and and 24 comprise a supporting frame for the gaugeFig. 4 is a detail view in section on the line 4--4 mechanism. of Fig.3. Depending from and fixed centrally to the bel- V35 Referring to thedrawing by characters of reflows head 9 is a stem or plunger 21 whichextends erence, I designates a casing or housing` member through boreI5, and a' guide aperture 2B`in crossof substantially invertedcup-shaped formation, member 24. Threaded on `the stem 21 above havingan end or top wall 2 from which depends member 24 for longitudinaladjustment, is a nut a substantially cylindrical side wall 3, having at29. Positioned between the nut 29 and member ,4o its lower end aninternal marginal recess 4 to 24 is a resilient member 3Il, preferably acoil provide a downward facing annular shoulder 5. spring undercompression and acting to expand On the end wall E is an external boss Ethrough the-bellows toward anv annular stop member 3| whichV and thewall 2 is an internally threaded carried by the casing wall 2. Acting onthe top inlet aperture 1. The open bottom or underside face of nut 29 inopposition to spring 30, is a re- .45 of the casing i is sealed by aresilient expansiblesilient member 32, preferably a coil spring,tendcontractible wall or member 8, preferably a subing to collapse thebellows 8, and held under comstantially cylindrical, circumferentiallycorrupression by a disc or abutment member 33 which gated, metal bellowspositioned substantially conengages the shoulder I6 and has a guideaperture 5o centrically within the casing vl and having ahead 34 forplunger 21. In the bottom end of plunger 5,0 9 closing and sealing itsupper end adjacent wall 21-is an internally threaded socket 35 having a2, and at its lower end having al lateral circumscrew plug 33 adjustablythreaded therein. The ferential flange iE) which seats against theshoulplug 35 is preferably provided with a look nut 31 der 5. Threadedor otherwise secured in the reand has an axial downward open bore orsocket cess 4 is a disk or plate member Il. which tightly 3 8 for apurpose to be described. Y 5 5 Positioned between the bosses 26 is arigid, substantially U-shaped supporting member 35i having front andrear substantially vertical upright members te, il through which arealined apertures 42. Extending laterally from member 4U are arm members43 which seat at their free ends in recesses 44 in the front faces ofbosses 26 toI which they are secured by screws or the like t5'.Extending through the apertures @.2 is a shaft 56 on which is journaleda cradle or operating member lil of substantially U-shaped form havingiront and rear upright members 48, 49. At the top of the rear member i9are substantially parallel forwardly extending spaced ears or abutmentmembers* 5t, 5l'. Alsof'jour.- naled on the shaft 46 but to the rear ofmember 48, is a needle or pointer 52, which extends upward in front ofthe member 241 into overlying cooperable relation to the scale plate23.. The end of pointer 52 which extends below shaft 46 has arearwardextension 53 from whichv rises an arnr 55 through which shaft 45passes. Theextension 53 is ofi'. such length that pointer 52 will beheldagainst movement longitudinally of, shaft ll-S. The side edge of arm 54is normally inlateral engagement with abutmentY or stopmember 51.ExtendingY forward from arm 54-l between members 5G'and 5l, and inopposingssubstantia'lly parallel relation to member 50, is an ear orabutment member 55. Positioned between: members 5d and; 55 is aresilient member 56, such as al coil springA held under compression; andnormally urging the arm 54 against ear or member''f. Themembers 59 and55'are preferably provided' with centering and supporting pins15,BitnerI spring 5.6. Fixed to the rear face of. the member 49 is anadjustable plate or lever member 59: which projects laterally beyond earO 5zl and hasa longitudinalislot GD through which the'Y shaft 45' and a`locking4 screw El pass, the screw 6l beingV threaded into the member 49.The cradley 41 f isr preferably held against movementf longitudinallyofthe shaft 45 by sleeve or washer members 62. Pivoted on a pin or screw63% fixed to the projecting end of member 59, is an link orv connectingmember GilV which extends upwardly` and hasY pivoted on` itsl upper enda rod or plunger 65` having a free sliding ilt`l inf the bore` 38a On.the front cradle member Vlir/il is al laterally extending ear.' or lug66 to which is secured one end` of a1 resilient member B1., preferablya' light coil spring under tension andhaving itsl other end' iixeditothe web 25a, as at ESB. The spring El serves to maintain the rodi 65seated' against the bottom of they bore 38 so that movement of stem" 2lwill be transmitted topointer 52. On the plate 23 is a graduated scale69, at the' ends of which are stopk pins or members '16; 1l, which'`project from plate 23 into the path oiA travel of pointerk 52. The frontandibackof the mechanism casing llare closed by plate orv cover members1.2, '13, which are secured to the frame members I1, I9 and 20 by screwsor the like 14'. The front' cover member'12 hasan' opening T5therethrough' which registers with scale- 59 and which is preferablysealed` by a glass-15 held in position by spring clipsI 'IT xed by`rivets 78, or the like, to the memberl 122 The" operationv of our gaugeis as follows: The gaugel is connected lat. the inlet' l by means ofnipple` G' intothe tank delivery conduit or'pipe line; The gauge may be`adjusted for changes inthe specic gravity of the'v liquid by means ofthe slotted plate' member V59 and the screw plug 3%, which provide forregulating the movement of the pointer 52 relative to a given movementof plunger 2. An increase in the specic gravity of the liquid iscompensated for by decreasing the lever arm through which the link @dacts on the pointer, i. .e., the distance between the center lines ofthe pin 63 and shaft te, which is accomplished by loosening the screw 5land shifting the plate 58 to the left of Figs. lv and 3. compensated forby movement ofl plate 59 toward the right of Figs. 1 and 3. Anyadjustment of the plate member 59 will necessitate adjustment of thedistance from` the end of plunger 2".' to the pivotl S3, which isaccomplished by i means ci the, screw plug 36. Any air which is in theline and chamber I2 is withdrawn by 11e liquid. suction..means if thetank is below the gauge, cr is forced out by gravity iiow of the liquidVif' the tank is above the gauge. The depth ci liquid'in the tank ismeasuredv and the pointer isith'en set by. means of the nut 29 toindicate on the scale 651 the measured' depth of the liquid. If thegauge is above the tank, the chamber i2 will be under sub-atmosphericpressure, tending to expand the bellows against the resistance of spring32. If the gauge is below the tank,.the chamber l2 will be underpressure of the gravity head or" the liquid inthe tank, tendto. compressthe bellows against the resistance of spring 30. In either case theplunger 2l will be moved up as the liquid level drops, and will be moveddown as the liquid level is increased in thev tank. Downward movement ofplunger 2l acts through plunger E5 held in en- Ll upward movement ofplunger 27, the spring 67 i will maintain rod 65 against plunger 21,turningr cradle l' counterclockwise of Fig. l with abutment 5l actingagainst arm 5l!A to move the pointer 52. When the pointer abuts stop pinl0, or for any other reason is halted in its travel, the-plunger 2'1-will move upward freely on or relative to rod 65,A thus permittingovertravel of the bellows and preventing injury tothe gauge mechanism.The adjustments for variation in specific gravity provide means tomaintain the angle of. deflection constant through which the pointermoves in response to a given variation in liquid level in the tank.

It will be noted that our gauge is not affected by changes inatmospheric pressure as the bellows 8 andhead 9 are open to atmosphericpressure on one side through the bore l5, and open on their other sidethrough port l to atmospheric pressure existing ovei` the liquid in thesupply tank. Since our gauge will record pressures either above or belowatmospheric, it is apparent that if it is-pcsitioned between thehorizontal planes oi theA top and bottom of a liquid supply tank, thatit will accurately indicate the varying supply tank level, which varyingliquid level pror duces in part, i. e., initially, a pressure head, andin part, i. e., nally, a suction head.

What we claim and desire to secure by Letters Patent ofthe United Statesiszi. Av device of the character described, com- A decrease in thespecic gravity is .i

prising a casing having Van inlet and an openv side, anexpansible-contractible member sealing Y said side, a plunger xed tosaid member, means Cil guiding said yplunger for longitudinalreciprocation, means resisting movement of said member, supportingmeans, a pointer v ]'ourrlaled on said supporting means for oscillatorymovement, and

a lost motion connection operatively connecting said 'plunger and saidpointer whereby said plunger in moving said pointer may move beyond thepermitted range of travel of said pointer.

Y 2. A device of the character described, comprising 'a casing having aninlei-l and an open side, an eXpansible-contractible member sealing saidside, a plunger fixed tosai d member, means guiding said plunger forlongitudinal reciprocation, means resisting movement of said member,

-vsupportingmeans a pointer journaled on said supporting means foroscillatory movement, and means operatively connecting said plunger andsaid pointer, said connection including a spring whereby to permitovertravel of said plunger when said pointer has reached its limit ofmovement.

3,. A device of the character described, comprising a casing having aninlet and an open side, an expansible-contractible member sealing saidside, a plunger fixed to said member, means guiding said plungerrorlongitudinal reciprocationmeans resisting movement of said member,supporting means, a pointer journaled on said supporting means foroscillatory movement by said plunger, an operating member havingoperative connection with said plunger, said operating member having aone-way driving connection with said pointer to move said pointer in onedirection, and resilient means for movement of said plunger in theopposite direction,

4. A device of the character described, comn prising a casing having aninlet and an open side, an eXpansible-contractible member sealing saidside, a plunger xed to said member, means guiding said plunger forlongitudinal reciprocation, means resisting expansion of said member,means resisting contraction of said member, supporting means, a pointerjournaled on said supporting means for oscillatory'movement, and meansoperatively connecting said plunger and said pointer and including meansto regulate the movement of said pointer for a given movement of saidplunger.

5. A device of the character described, comprising a casing having aninlet and an open side, an expansible-contractible member sealing saidopen side, a plunger fixed to said member, means guiding said plungerfor longitudinal reciprocation, means resisting movement of said member,guide means on the free end of said plunger, a member guided by saidlast named means and reciprocable longitudinally of said plunger, meansnormally maintaining said member in engagement with said plunger,supporting means, a pointer journaled on said supporting means foroscillatory movement, vand means connecting said guided member and saidpointer.

S. A device of the character described, comprising a casing having aninlet and an open side, an eXpansible-contractible member sealing saidopen side, a plunger iiXed to said member, means guiding said plungerfor longitudinal reciprocation, means resisting movement of said member,the free end of said plunger having a substantially axial socket, a rodreciprocable in said socket and adapted to seat therein, supportingmeans, a pointer journaled on said support ing means for oscillatorymovement, means oonnecting said rod and said pointer, and resilientmeans urging said rod into engagement with said plunger whereby movementof said'plunger will be transmitted to said rod.

'7. A device of the character described, comprising a casing having aninlet and an open side, a resilient eXpansible-contraotible membersealing said side, a plunger xed to said member, means guiding saidplunger for longitudinal reciprocation, a rigidly supported shaft, apointer `iournaled on said shaft, means journaled on said shaft andhaving operative engagement with said pointer, and means connecting saidlast-named means and said plunger.

8. A device or" the character described, comprising a casing having aninlet and an open side, a resilient expansible-contractible membersealing said side, a plunger xed to said member, means guiding saidplunger for longitudinal reciprocation, a rigidly supported shaft, apointer journaled on said shaft, an operating member journaled on saidshaft, resilient means to trans mit motion from said operating member'tesaid pointer, and means connecting said operating member and saidplunger.

9. A device of the character described, comprising a casing having aninlet and an open side, a res ient expansible-contractible membersealing said side, a plunger nxed to said member, means guiding saidplunger for longitudinal reciprocation, a rigidly supported shaft, apointer journaled on said shaft, means journaled on said shaft andhaving operative engagement with said pointer, and means connecting saidlast-named means and said plunger, said last-named means including meansto regulate the movement of said pointer for a given movement of saidplunger.

l0. A device of the character described, oomprising a casing having anopen side, a resilient eXpansible-contractible member sealing said openside, said casing having an inlet, a plunger fixed to said member, aplurality of spring means positioned on the same side of and coop-erablewith said resilient member, one of said spring means resisting expansionof said member, another of said spring means resisting contraction ofsaid member, means surrounding said plunger and operable to regulate theresistance of each of said resisting means, and a pointer operativelyconnected to said plunger.

11. A device of the character described, comprising a casing having anopen side, a resilient eXpansible-contractible member sealing said openside, said casing having an inlet, a plunger Xed to said member, anadjustable abutment on said plungers, spring means held undercompression against said abutment to resist eXpansion of said member,spring means held under compression against said abutment to resistcompression of said member, and a pointer operatively connected to saidplunger.

l2. In a device or the character described, means responsive to uidpressure, a plunger operatively connected to said means for movementthereby, means resisting movement of said plunger, a supporting shaft,an operating member journaled on said shaft, a pointer journaled on saidshaft, means operatively connecting said member and said pointer, alever arm adjustably secured to said operating member, and meansoperatively connecting said lever arm and said plunger whereby movementof said first-named means will be transmitted to said pointer.

means responsive to fluid pressure, aplunger. operatively connected tosaid means for movement thereby, means resisting movement of saidplunger, a supporting shaft, an operating member journaled on saidshaft, a pointer journaled on said shaft, said pointer having anabutment member, saidoperating member having an abutment member disposedopposite said first-named abutment member, spring means interposedbetween said abutment members whereby movement of said operating memberwill move said pointer, and means operatively connecting said operatingmember and said plunger.

14. In a device of the character described, means responsive to iiuidpressure, a plunger operatively connected to said means for movementthereby, means resisting movement of said plunger, a supporting shaft,an operating member journaled on said shaft, a pointer Vjournaled onsaid shaft, said pointer having an abutment member, said operatingmember having an abutment member disposed opposite said first-namedabutment member and having a stop member cooperable with saidfirst-named abutment member to limit movement of said pointer relativelto said operating member in one direction, spring means interposedbetween said abutment members and normally urging said irst-namedabutment member into engagement with said stop member whereby movementof said operating member will move said pointer, and means oper- 13. Ina device of the character described,

ativelyJ connecting said operating member and said plunger.

15. Ina deviceof the character described, means responsive to fluidpressure, a plunger operatively connected to said means for movement.

thereby, means resisting movement of said plunger, a supporting shaft, asubstantially U-shaped operating member having the arms thereofapertured and receiving said shaft, one of the arms of said operatingmember having opposed and spaced abutment members, a pointer journaledon said shaft between said arms and having an arm positioned betweensaid abutment members, spring means positioned between said arm and oneof said abutment members and normally acting to urge said arm intoengagement with the other oi said abutment members, and meansoperatively connecting said operating member and said plunger, saidlast-named means including means to adjust the movement of said pointerfor a given movement of said plunger.

16. A device of the character described, comprising a casing having aneXpansible-contractible wall and an inlet, a plunger movable by saidwall, helical coil spring means surrounding said plunger and positionedon one side only of said wall, said spring means cooperating with saidwall and being adjustable to oppose expansion or contraction of saidWall, means to adjust said spring means, and a pointer operativelyconnected to said plunger.

PHILIP SHERMAN RUSSEL. ADOLF voN WANGENHEIM.

CER'HFICATE 0F CORRECTION.

Patent No. l,997,9l7. April i6. 1935.

HlLlP SHERMAN RUSSEL, ET ALB It is hereby certified that error appearsin the printed specification of the above numbered patent requiringcorrection as follows; Page 2, second column, line 56, for "of" read or;page 3, second column, line 58, elaim li, for "plungers" read plunger;and page 4, first column, line 32, strike out the claim numeral andwords "13. in a device of the character described," and insert ille samebefore line l., of said page ami column, as the first line of claim i3;and that the said Letters Patent should be read with these correctionsFlier-ein that fhe same may conform to the record of the case in tliePatent Office.

Signed and sealed this 16th day of July, A. D. 1935.

Les! ie, Frazer (Seal) Acting Commissioner of Patents.

